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61 lines
2 KiB
C
61 lines
2 KiB
C
/* Resampling library
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* Copyright (C) <2001> David Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __FUNCTABLE_H__
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#define __FUNCTABLE_H__
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typedef void FunctableFunc (double *fx, double *dfx, double x, void *closure);
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typedef struct _Functable Functable;
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struct _Functable {
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int length;
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double offset;
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double multiplier;
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double inv_multiplier;
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double *fx;
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double *dfx;
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};
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Functable *functable_new (void);
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void functable_setup (Functable *t);
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void functable_free (Functable *t);
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void functable_set_length (Functable *t, int length);
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void functable_set_offset (Functable *t, double offset);
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void functable_set_multiplier (Functable *t, double multiplier);
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void functable_calculate (Functable *t, FunctableFunc func, void *closure);
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void functable_calculate_multiply (Functable *t, FunctableFunc func, void *closure);
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double functable_evaluate (Functable *t,double x);
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double functable_fir(Functable *t,double x0,int n,double *data,int len);
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void functable_fir2(Functable *t,double *r0, double *r1, double x0,
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int n,double *data,int len);
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void functable_func_sinc(double *fx, double *dfx, double x, void *closure);
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void functable_func_boxcar(double *fx, double *dfx, double x, void *closure);
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void functable_func_hanning(double *fx, double *dfx, double x, void *closure);
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#endif /* __PRIVATE_H__ */
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